RU1838105C - Hydraulic press for production of pieces by loose mixtures semidry pressing - Google Patents

Abstract

Use: for semi-dry pressing of bricks, tiles, tiles and the like. SUBSTANCE: hydraulic press contains a bed 1 with columns, a rotary table 6 with dies 7 and punches 8. The press has three positions: loading, pressing and ejecting. The ejection mechanism is made in the form of a bracket 15, consisting of two-shaped plates 16. The bracket 15 is installed in the bores of the pedestal 18 on the spring-loaded rolling pin 17. The bracket 15 covers the table with the shelves 19 and 20, and a power cylinder 23 is installed on the lower shelf 20 so that it can interact rod with a punch 8. The upper shelf 19 is able to interact with the front of the matrix 7 and there is a device installed on it to push the finished product in the form of an additional hydraulic cylinder 25. 3 il. I AM: --. 00 CA 00 a with g-i figg

Description

The invention relates to equipment for molding building products and can be used in the building materials industry for annealing brick, tile. The aim of the invention is to increase operational reliability by relieving the matrix from the buoyancy force and increasing productivity by reducing the stroke of the cylinder rod.

In FIG. 1 shows a press, top view; figure 2 is a section aa in figure 1; in Fig. 3 - section BB-1.

The hydraulic press contains a bed 1, two columns 2 and 3 mounted on it, connected by traverses 4 and 5. On the column 3, a table 6 with built-in dies 7 and punches 8 is mounted on the column 3. Pressing hydraulic cylinders are installed on the crossarm 5 - the main 9 and two plunger 10, the rods of which are connected with a cross member 11 that moves along the guides of the columns 2 and 3. A loading hopper 12 is installed on the frame 1. A support punch 13 is mounted on the upper crosshead 4, mounted coaxially with the rod of the main cylinder 9. A mechanism is mounted on the frame 1 ejection 14 in the form of an arm 15 consisting of parallel parallel two-shaped plates 16 connected by jumpers. The bracket 15 is mounted on rolling pins 17 placed in the vertical bores of the pedestal 18.

The upper 19 and lower 20 shelves bracket 15 covers the outer and inner surfaces of the table with the possibility of interaction of the supporting surface 21 of the upper shelf 19 with the end face of the matrix 7.

By means of elastic elements 22 mounted on rolling pins 17 between their head restraints and the ends of the holes of the cabinet 18; a gap is provided between the supporting surface 21 of the shelf 19 and the end face of the matrix 7, and at the time of pressing between the end of the cabinet (bottom) and the supporting platform of the bracket 15 (as shown in Fig. 2).

A power cylinder 23 is fixed to the lower shelf 20, the rod 24 of which interacts with the punch 8. The distance between the inner walls of the plates of the upper shelves is slightly larger than the die opening to allow passage of the finished product. An additional hydraulic cylinder 25 is mounted on the upper shelf, and a pusher 27 is mounted on its rod 26 to push the finished product onto the conveyor. Stem 26 moves between the walls of the upper flange.

The hydraulic press operates as follows.

At the loading position, molding sand is poured into the matrix 7. Table 6 rotates 1/3 of a turn, while the mixture-filled matrix 7 moves to the pressing position, where the article is pressed by the pressing cylinders. At the next rotation of table 6, the matrix 7 with the pressed product enters the ejection and removal position of the product, where the product is removed from the matrix 7 using the ejection mechanism. The next time the table 6 is rotated, the prepared matrix 7 again enters the position

5 downloads and the cycle repeats.

The indicated operations are performed at all positions of the press simultaneously.

After stopping the table 6 at the ejection position, the oil is turned on to the piston cavity of the ejection mechanism cylinder 23 and the rod 24 is moved upwardly in contact with the supporting surface of the punch 8. When B) the further supply of oil to the piston cavity of the power cylinder 23, the bracket 15, overcoming the force of the springs 22, falls by the amount of the gap a, while the supporting surfaces 21 of the upper shelf 19 lie on the end of the matrix 7. The oil continues to enter the piston cavity of the power cylinder 23, raises the rod 24 and the punch 8 pushes the product from the matrix 7 to the surface level of the table 5. As a result, the ejection force is transmitted to the table 5.

5, the bed 1 and other parts of the press, and closes on the bracket 15 through the matrix 7, shelves 19 and 20, the punch 8 and the power cylinder 23.

As soon as the product is pushed to the level of the surface of the table 5, an additional hydraulic cylinder 25 is turned on and its rod 26 pusher 27 moves the finished product from the table 6. After the product extends beyond the hole of the matrix 7, the oil supply to the rod cavity of the power cylinder 23 is stopped5 , under the action of the springs 22, the bracket rises up and between the supporting surfaces 21 and the end face of the matrix a horizontal gap is formed, which allows the next rotation of the table 6 by 1/3 of the turn, without waiting for the complete lowering of the punch 8 and rod 26.

SUMMARY OF THE INVENTION Semi-dry hydraulic press

5 pressing articles and bulk mixtures containing a bed of leather; chami. on one of which there is a rotary table with built-in dies and punches, pressing cylinders and an ejection mechanism, made in the form of a power cylinder mounted on a bed with the possibility of vertical movement, about t- / having in order to increase operational reliability

and due to unloading the table from the buoyancy force and increasing productivity by reducing the stroke of the cylinder rod, the ejection mechanism is equipped with a bracket made in the form of two closely-shaped rigidly interconnected plates

stins with shelves covering the rotary table, while the upper shelf is installed so that the inner plane can interact with the end surface of the matrix, and a power cylinder is fixed on the lower shelf with the possibility of the rod interacting with the punch, the distance between the plates of the upper shelf being larger than the size of the matrix hole.

AND

(pts & j

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